In lord of the flies describe how sameric piggy and Ralph justify their involvement in Simon's death?

Sam and Eric justify their involvement by explaining that they were caught up in the frenzy of the moment and were too scared to stop the others from attacking Simon. Piggy justifies his involvement by claiming that he thought they were attacking the beast and not Simon. Ralph justifies his involvement by stating that he was a part of the group and felt pressured to go along with the others.